A. in
B. for
C. on

1. -What does Sarah usually do on the weekend?                            
    -She usually              .

2. -What did you do on your holiday?              
    -I went to Beijing and              there. 

3. -What is Lisa doing now?                                      
    -She is            _ on the playground.

4. -Are you going to have a picnic this afternoon?    
    -No, we are going to            .         

5. Mike is             and               than  Ben.

Chen: What are you going to do this weekend?
Sarah: I'm going to plant trees.
Chen: Are you going to use any books?
Sarah: Yes. I'm going to the bookstore. I'm going to buy a magazine about plants.
Chen: That's great!
Sarah: I want to be a science teacher one day!
1. What is Sarah going to do on the weekend?
_____________________________________________________
2. What is Sarah going to buy in the bookstore?
_____________________________________________________
3. What does Sarah want to be in the future?
_____________________________________________________

Boy: What are you going to do this weekend?
Girl: I'm going to 1_____________ (购物) on Saturday morning. I want to buy a pair of
       2_____________ (鞋子).
Boy: And then?
Girl: I'm going to the 3_____________ (科学书店). And in the evening I'm going to 4_____________
       (看望祖父母).
Boy: What are you going to do on 5_____________ (星期天)?
Girl: I'm going to the zoo. Would you like to go with me?
Boy: Sure.